I have a HTPC connected to an older Marantz receiver and I'm using a 3.1 setup. I have been using audio over hdmi to the tv, then optical from the tv to the receiver. After much frustration, I realized that the tv only supports stereo audio over hdmi. Since my receiver is older, it has no hdmi on it, but many optical inputs and outputs (and more S-Video than you could ever need lol). I have found some splitters that pass through the hdmi, but also give an optical out that supports 5.1 audio, like this one. So, do you guys have any experience with these? Will they mess with the sound quality or increase latency a noticeable amount (I do use the system for some gaming)? Any advice is greatly appreciated.